{"id":24890839,"date":"2026-09-26T16:53:56","date_gmt":"2026-09-26T14:53:56","guid":{"rendered":"https:\/\/migflug.com\/afterburner\/lima-site-85-phou-pha-thi-etchberger-medal-of-honor-1968\/"},"modified":"2026-09-26T16:54:31","modified_gmt":"2026-09-26T14:54:31","slug":"lima-site-85-phou-pha-thi-etchberger-medal-of-honor-1968","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/de\/lima-site-85-phou-pha-thi-etchberger-medal-of-honor-1968\/","title":{"rendered":"Lima Site 85: The Secret Radar the US Lost on a Mountain in Laos"},"content":{"rendered":"<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style>\r\n\r\n<p>On the night of 10 March 1968, nineteen American airmen were living on top of a mountain in a country where, officially, there were no American troops at all. Phou Pha Thi rises more than a mile above northeastern Laos, with sheer cliffs on one side. On its summit sat a radar that guided US bombers to targets in North Vietnam, in any weather, day or night.<\/p>\r\n\r\n<p>By dawn on 11 March, the mountain had been overrun. Eleven of the Americans were dead on the summit and the ledges below it, and a twelfth would die in the rescue helicopter. It was the largest single ground combat loss of US Air Force personnel in the Vietnam War, and for years the families were not even told where it had happened.<\/p>\r\n\r\n\r\n<div style=\"background:#f4f5f7;border:1px solid #e2e7ee;padding:18px 22px;margin:8px 0 28px\"><p style=\"margin:0 0 10px;font-weight:700;font-size:17px\">Quick Facts<\/p><ul style=\"margin:0;padding-left:20px;line-height:1.7\"><li><strong>Site:<\/strong> Lima Site 85, on Phou Pha Thi, northeastern Laos, about 5,580 ft (1,700 m) high<\/li><li><strong>Purpose:<\/strong> TSQ-81 radar bombing control system (Commando Club), guiding strikes on North Vietnam<\/li><li><strong>Operational:<\/strong> From November 1967 until 11 March 1968<\/li><li><strong>Americans on site:<\/strong> 19 USAF personnel on the night of the attack<\/li><li><strong>US losses:<\/strong> 12 killed or missing, including CMSgt Richard Etchberger, shot during the evacuation<\/li><li><strong>An-2 raid:<\/strong> 12 January 1968: North Vietnamese An-2 biplanes attacked the site; both were brought down<\/li><li><strong>Recognition:<\/strong> Etchberger's Air Force Cross upgraded to the Medal of Honor on 21 September 2010<\/li><li><strong>Still missing:<\/strong> Four airmen unaccounted for as of January 2026<\/li><\/ul><\/div>\r\n\r\n\r\n<h2 style=\"padding-top:22px\">A Radar Where It Could Not Officially Be<\/h2>\r\n\r\n<p>Laos was neutral under the 1962 Geneva Accords, and the US could not admit to having military personnel there. But Phou Pha Thi, only about 15 miles from the North Vietnamese border and roughly 160 miles west of Hanoi, was too valuable to ignore. A navigation beacon went up in 1966. In 1967, under a project called Heavy Green, the Air Force installed a TSQ-81, an air-transportable radar bombing control system.<\/p>\r\n\r\n<p>The TSQ-81 could track an aircraft and calculate the exact moment to release its bombs, so <a href=\"https:\/\/migflug.com\/aircraft\/f-105-thunderchief\/\">F-105s<\/a>, <a href=\"https:\/\/migflug.com\/aircraft\/f-4-phantom-ii\/\">F-4s<\/a> and <a href=\"https:\/\/migflug.com\/aircraft\/b-52-stratofortress\/\">B-52s<\/a> could hit targets through cloud and at night. Under the name Commando Club, it began directing strikes in November 1967. According to Air & Space Forces Magazine, it directed 23% of the air strikes in northern North Vietnam while it was operational.<\/p>\r\n\r\n<p>To keep up the fiction of Laotian neutrality, the technicians were formally discharged from the Air Force and hired as civilians by Lockheed. They were protected by Hmong and Thai forces, but were themselves barely armed.<\/p>\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/lima-site-85-phou-pha-thi-ridgeline.jpg\" alt=\"The ridgeline of Phou Pha Thi, site of Lima Site 85\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">The ridgeline of Phou Pha Thi and the radar site known as Lima Site 85. US Air Force photo, public domain, via Wikimedia Commons<\/figcaption><\/figure>\r\n\r\n\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #1565c0;padding:20px 22px;margin:18px 0 24px;font-size:16px;line-height:1.7;display:flex;gap:20px;align-items:flex-start\"><a href=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/cmsgt-richard-etchberger-portrait.jpg\" target=\"_blank\" style=\"flex-shrink:0\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/cmsgt-richard-etchberger-portrait.jpg\" alt=\"Chief Master Sgt. Richard Etchberger\" style=\"width:96px;height:96px;border-radius:50%;object-fit:cover;object-position:top;display:block;border:2px solid #ddd\"><\/a><div><em>&ldquo;I hate to be away from home, but I believe in the job. It is the most challenging job I\u2019ll ever have in my life. I love it.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Chief Master Sgt. Richard Etchberger<\/strong> &mdash; in a letter home from Lima Site 85, quoted by President Obama at the 2010 Medal of Honor ceremony<\/div><\/div><\/div>\r\n\r\n\r\n<h2 style=\"padding-top:22px\">The Day Biplanes Attacked<\/h2>\r\n\r\n<p>North Vietnam knew exactly what the radar was doing. On 12 January 1968 it tried something unusual: an air attack with Soviet-built Antonov An-2 biplanes. According to Wikipedia's account, the An-2s dropped 120 mm mortar rounds and fired rockets at the site, killing four Hmong.<\/p>\r\n\r\n<p>What happened next is one of the strangest air-to-air kills in history. An Air America <a href=\"https:\/\/migflug.com\/aircraft\/uh-1-huey\/\">Huey<\/a> flown by Captain Ted Moore happened to be nearby. Moore chased the biplanes, and his flight mechanic, Glenn Woods, fired at one with an AK-47 from the cabin. Both An-2s were brought down, one after being damaged by ground fire.<\/p>\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/air-america-huey-an-2-lima-site-85-painting.jpg\" alt=\"Painting of an Air America Huey engaging An-2 biplanes over Lima Site 85\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">Keith Woodcock's painting of the Air America Huey engaging the two North Vietnamese An-2 biplanes that attacked Lima Site 85 on 12 January 1968. Public domain, via Wikimedia Commons<\/figcaption><\/figure>\r\n\r\n\r\n<p>The raid failed, but the message was clear. By February, North Vietnamese and Pathet Lao troops were closing in on the mountain, and a notebook taken from a captured North Vietnamese officer spelled out the plan of attack.<\/p>\r\n\r\n<h2 style=\"padding-top:22px\">The Night of 10 March<\/h2>\r\n\r\n<p>The warning signs were there. Security officer Major Richard Secord wanted better protection and argued for evacuation. The US ambassador to Laos, William Sullivan, who controlled operations in the country, held back for political reasons. According to Wikipedia, he did not order the evacuation until 05:15 on 11 March, after the site had already been overrun. Sullivan later said the technicians should have been pulled out on 10 March.<\/p>\r\n\r\n<p>At 18:00 on 10 March, an artillery barrage hit the mountain, followed by an infantry attack on the southeast slope. After midnight, North Vietnamese sappers of the 41st Special Forces Battalion did what the defenders believed was impossible: they climbed the cliffs and attacked the summit. Air & Space Forces Magazine puts the number of sappers at 33 to 35. Several of the Americans at the radar site were killed in the first minutes. Etchberger and four of his men were on a small rocky ledge on a safer side of the mountain, where they had moved after their shift.<\/p>\r\n\r\n<p>Etchberger, a radar technician with no formal combat training, spent the night on that ledge with his men. Grenades rained down. One after another, his men were killed or wounded. Etchberger fought back with an M16, and called in air strikes close to his own position to keep the enemy back.<\/p>\r\n\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/Mr_vUH_5Cx0\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\r\n\r\n\r\n<p><em>The HeroFront Podcast on the battle of Lima Site 85 and Richard Etchberger's legacy.<\/em><\/p>\r\n\r\n<h2 style=\"padding-top:22px\">Rescue at Dawn<\/h2>\r\n\r\n<p>In the morning, an Air America helicopter arrived and lowered its sling. Etchberger loaded his wounded men one by one, exposing himself to fire each time, then pulled in another airman who had hidden from the attackers through the night, and finally climbed in himself. As the helicopter pulled away, a burst of ground fire came up through the floor. Etchberger was hit, and he died before the helicopter landed.<\/p>\r\n\r\n<p>Eight Americans were evacuated from the mountain, including two CIA officers and a forward air controller. Of the 19 Air Force men on Phou Pha Thi that night, only seven survived. Three of them, President Obama said in 2010, owed their lives to Etchberger.<\/p>\r\n\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #5C91FF;padding:20px 22px;margin:18px 0 24px;font-size:16px;line-height:1.7;display:flex;gap:20px;align-items:flex-start\"><div><em>&ldquo;As a technician, he had no formal combat training. In fact, he had only recently been issued a rifle. But Dick Etchberger was the very definition of an NCO, a leader determined to take care of his men.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>President Barack Obama<\/strong> &mdash; at the Medal of Honor ceremony for Richard Etchberger, 21 September 2010<\/div><\/div><\/div>\r\n\r\n\r\n<p>The Air Force then turned its bombs on its own radar. Between 12 and 18 March, US aircraft flew 95 strike sorties against the site to destroy the captured equipment, and on 19 March an <a href=\"https:\/\/migflug.com\/aircraft\/a-1-skyraider\/\">A-1 Skyraider<\/a> destroyed the remaining buildings. A reconnaissance photo from 16 March shows what was left.<\/p>\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/lima-site-85-reconnaissance-16-march-1968.jpg\" alt=\"Reconnaissance photo of Lima Site 85, 16 March 1968\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">Lima Site 85 photographed by a USAF reconnaissance aircraft on 16 March 1968, after the site had been overrun. US Air Force photo, public domain, via Wikimedia Commons<\/figcaption><\/figure>\r\n\r\n\r\n<h2 style=\"padding-top:22px\">Forty-Two Years of Silence<\/h2>\r\n\r\n<p>Etchberger received the Air Force Cross in a private ceremony at the Pentagon. His three sons were told their father was a hero, but not where he died or why. His wife Catherine had known, but was sworn to secrecy. The mission stayed classified for years, and only after it was declassified did the family learn that he had died in Laos, not Vietnam.<\/p>\r\n\r\n<p>A retired airman who read about Etchberger took up his case with his congressman. On 21 September 2010, President Obama presented the Medal of Honor to Etchberger's three sons in the East Room of the White House.<\/p>\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/obama-medal-of-honor-etchberger-sons-2010.jpg\" alt=\"President Obama presents the Medal of Honor to Etchberger's sons\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">President Barack Obama presents the Medal of Honor posthumously to the sons of Chief Master Sgt. Richard Etchberger, 21 September 2010. White House photo by Pete Souza, public domain, via Wikimedia Commons<\/figcaption><\/figure>\r\n\r\n\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/HrQCVCWT_HQ\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\r\n\r\n\r\n<p><em>The official White House video of the 2010 Medal of Honor ceremony for Chief Master Sgt. Richard Etchberger.<\/em><\/p>\r\n\r\n<p>The search for the missing has never stopped. In 2002, former North Vietnamese soldiers said the Americans' bodies had been thrown off the mountain. Recovery teams have since worked on ledges far below the summit, and several airmen have been identified, including Colonel Clarence Blanton, the site commander, in 2012, and four more airmen in 2025. According to Wikipedia, four were still unaccounted for at the start of 2026.<\/p>\r\n\r\n<p><em>Sources: Wikipedia (Battle of Lima Site 85; Richard Etchberger), Air & Space Forces Magazine, The American Presidency Project (Obama remarks, 21 September 2010), Timothy N. Castle, One Day Too Long (Columbia University Press, 2000)<\/em><\/p>\r\n\r\n\r\n<style>.mfq{margin:34px 0 8px}.mfq h2{font:26px\/1.3 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117;padding-top:22px;margin:0 0 6px}.mfq .qa details{border-top:1px solid #5C91FF;margin:0;padding:0}.mfq .qa details:last-of-type{border-bottom:1px solid #e2e7ee}.mfq .qa summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;font:18px\/1.7 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117}.mfq .qa summary::-webkit-details-marker{display:none}.mfq .qa summary::after{content:\"+\";font:24px Helvetica,sans-serif;color:#3568e0;flex:0 0 auto}.mfq .qa details[open] summary::after{content:\"\\2013\"}.mfq .qa details:hover summary{color:#3568e0}.mfq .qa .a{font:16px\/1.7 \"Gilroy regular\",Helvetica,Arial,sans-serif;color:#454e5e;padding:0 26px 24px}.mfq .qa .a a{color:#3568e0}@media(max-width:680px){.mfq .qa summary{padding:18px 14px;font-size:17px}.mfq .qa .a{padding:0 14px 20px}}<\/style>\r\n\r\n\r\n<section class=\"mfq\"><h2>Frequently Asked Questions<\/h2><div class=\"qa\"><details open><summary>What was Lima Site 85?<\/summary><div class=\"a\">Lima Site 85 was a secret US Air Force radar station on the mountain Phou Pha Thi in northeastern Laos. Its TSQ-81 radar, operated under the name Commando Club from November 1967, guided US bombers to targets in North Vietnam in all weather, day or night.<\/div><\/details><details><summary>What happened at Lima Site 85 on 11 March 1968?<\/summary><div class=\"a\">North Vietnamese sappers scaled the cliffs of Phou Pha Thi and overran Lima Site 85 before dawn on 11 March 1968. Of the 19 US Air Force personnel on the mountain, 12 were killed or missing, the largest single ground combat loss of USAF personnel in the Vietnam War.<\/div><\/details><details><summary>Why did Richard Etchberger receive the Medal of Honor?<\/summary><div class=\"a\">Chief Master Sergeant Richard Etchberger defended wounded comrades on a ledge below the summit through the night, called in air strikes near his own position, and loaded the wounded into a rescue helicopter under fire. He was fatally wounded as the helicopter departed. His Air Force Cross was upgraded to the Medal of Honor on 21 September 2010.<\/div><\/details><details><summary>Did a helicopter really shoot down a biplane at Lima Site 85?<\/summary><div class=\"a\">Yes. On 12 January 1968, North Vietnamese An-2 biplanes attacked Lima Site 85. An Air America Huey flown by Captain Ted Moore chased them, and flight mechanic Glenn Woods fired at one with an AK-47. Both An-2s were brought down, one after being damaged by ground fire.<\/div><\/details><details><summary>Why was Lima Site 85 kept secret?<\/summary><div class=\"a\">Laos was officially neutral under the 1962 Geneva Accords, so the United States could not acknowledge military personnel there. The technicians worked as nominal civilians, and the mission stayed classified for years, so Etchberger's family did not learn where he had died until it was declassified.<\/div><\/details><details><summary>Have the Lima Site 85 airmen been found?<\/summary><div class=\"a\">Some have. Recovery teams have identified several airmen, including site commander Colonel Clarence Blanton in 2012 and four more in 2025. As of January 2026, four airmen from Lima Site 85 remained unaccounted for.<\/div><\/details><\/div><\/section>\r\n\r\n\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What was Lima Site 85?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Lima Site 85 was a secret US Air Force radar station on the mountain Phou Pha Thi in northeastern Laos. Its TSQ-81 radar, operated under the name Commando Club from November 1967, guided US bombers to targets in North Vietnam in all weather, day or night.\"}},{\"@type\":\"Question\",\"name\":\"What happened at Lima Site 85 on 11 March 1968?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"North Vietnamese sappers scaled the cliffs of Phou Pha Thi and overran Lima Site 85 before dawn on 11 March 1968. Of the 19 US Air Force personnel on the mountain, 12 were killed or missing, the largest single ground combat loss of USAF personnel in the Vietnam War.\"}},{\"@type\":\"Question\",\"name\":\"Why did Richard Etchberger receive the Medal of Honor?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Chief Master Sergeant Richard Etchberger defended wounded comrades on a ledge below the summit through the night, called in air strikes near his own position, and loaded the wounded into a rescue helicopter under fire. He was fatally wounded as the helicopter departed. His Air Force Cross was upgraded to the Medal of Honor on 21 September 2010.\"}},{\"@type\":\"Question\",\"name\":\"Did a helicopter really shoot down a biplane at Lima Site 85?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. On 12 January 1968, North Vietnamese An-2 biplanes attacked Lima Site 85. An Air America Huey flown by Captain Ted Moore chased them, and flight mechanic Glenn Woods fired at one with an AK-47. Both An-2s were brought down, one after being damaged by ground fire.\"}},{\"@type\":\"Question\",\"name\":\"Why was Lima Site 85 kept secret?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Laos was officially neutral under the 1962 Geneva Accords, so the United States could not acknowledge military personnel there. The technicians worked as nominal civilians, and the mission stayed classified for years, so Etchberger's family did not learn where he had died until it was declassified.\"}},{\"@type\":\"Question\",\"name\":\"Have the Lima Site 85 airmen been found?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Some have. Recovery teams have identified several airmen, including site commander Colonel Clarence Blanton in 2012 and four more in 2025. As of January 2026, four airmen from Lima Site 85 remained unaccounted for.\"}}]}<\/script><div style=\"background:#f0f4ff;border-left:4px solid #5C91FF;padding:16px 20px;margin:32px 0 8px\">\r\n<p style=\"margin:0 0 8px;font-weight:600;color:#333\">Related Posts<\/p>\r\n<p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/a-1-skyraider-sandy-csar-vietnam-bernard-fisher\/\">He Landed in the Middle of a Battle<\/a><\/p>\r\n<p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/son-tay-raid-1970-empty-pow-camp\/\">Son Tay: The Raid That Rescued No One<\/a><\/p>\r\n<p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/charles-debellevue-wso-ace-vietnam-six-kills-f-4-phantom\/\">The Top American Ace of Vietnam Never Flew the Aircraft<\/a><\/p>\r\n<\/div>\r\n","protected":false},"excerpt":{"rendered":"<p>In March 1968, North Vietnamese sappers climbed the cliffs of Phou Pha Thi and overran a secret US radar in Laos. Chief Master Sgt. Richard Etchberger saved three men, and his family waited 42 years for his Medal of Honor.<\/p>","protected":false},"author":24,"featured_media":24890047,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[666,664],"tags":[],"class_list":["post-24890839","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-history-and-legends","category-military-aviation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Lima Site 85: The Secret US Radar Lost in Laos | MiGFlug<\/title>\n<meta name=\"description\" content=\"Lima Site 85: in 1968 North Vietnamese sappers overran a secret US radar on Phou Pha Thi in Laos. 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